A network job transmitter selects jobs from the job transmission queue. If there is a network job header and trailer, (the job has been received from a node other than the node where the job was created), the job transmitter updates them as appropriate. For example, if the job was destined for execution at this node but routed to another node (through either a $R operator command or a /*XMIT control statement), the job transmitter places the new job card information in the job header. If the job was received from the origin node, the job transmitter builds the NJE headers and trailers so that the job can be sent across the network.

The job transmitter sends the job exactly as the system read it in. The transmitter does not send any statements added by the local input service processor and recovers, for transmission, any statements which the input service processor deleted or modified. Because JES2 preserves the original job stream on the spool disk, the job transmitter can reconstruct the original job.

You can store job-related information with both job and SYSOUT data sets, and transmit installation-specific data from node to node using the $JCTX and $NHD services. See sample exit HASXJECL in the AHASSAMP JES2 distribution library. For more information about using these services, see z/OS JES2 Macros.